1461973745 has 8 divisors (see below), whose sum is σ = 1755258984. Its totient is φ = 1168985344.

The previous prime is 1461973739. The next prime is 1461973757. The reversal of 1461973745 is 5473791641.

It can be written as a sum of positive squares in 4 ways, for example, as 66129424 + 1395844321 = 8132^2 + 37361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1461973745 - 2²⁸ = 1193538289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1461973745.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63224 + ... + 83193.

It is an arithmetic number, because the mean of its divisors is an integer number (219407373).

Almost surely, 2^1461973745 is an apocalyptic number.

It is an amenable number.

1461973745 is a deficient number, since it is larger than the sum of its proper divisors (293285239).

1461973745 is a wasteful number, since it uses less digits than its factorization.

1461973745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148419.

The product of its digits is 635040, while the sum is 47.

The square root of 1461973745 is about 38235.7652597669. The cubic root of 1461973745 is about 1134.9581760546.

The spelling of 1461973745 in words is "one billion, four hundred sixty-one million, nine hundred seventy-three thousand, seven hundred forty-five".